remove duplicate complex annotations

[Dan Bean]

e.g. vps17 in GO:0030904 retromer complex

the files are processed on the assumption that the list of complex members is unique, which is isn't. Remove the duplicates from the list of complex members before continuing to process. Need to change format.py

[Dan Bean]

fix issue #91 - remove duplicate complex annotations

→ <<cset 82ebeff6978d>>